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Full text of "The manufacture and properties of iron and steel"

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S56                        METALLURGY OP IRON" AND STEEL.
The burden of this chapter is to the effect that segregation is ever present; that the extent -of the concentration bears a relation to the .proportion of impurities present; that manganese, copper and nickel do not segregate to any extent,, but "that certain portions of the finished material will contain a higher percentage of carbon, phosphorus and sulphur than will be found in the tests cut from the edge of plates and bars, or than will be shown by the preliminary ;test. It is also indicated that a degree of uniformity, sufficient for practical needs, may be expected if the initial metal is low in phosphorus and sulphur. '